package com.itxialu.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itxialu.reggie.common.R;
import com.itxialu.reggie.entity.Employee;
import com.itxialu.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.nio.charset.StandardCharsets;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.Date;

/**
 * @author shkstart
 * @create 2022-09-25 11:56
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class Employeecontroller {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        return R.success(emp);
    }

    /*退出登录*/
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出登录成功！");
    }

    /*新增员工信息*/
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工信息：{}", employee.toString());

        //1.设置初始密码123456,需要进行MD5的加密处理
        String password2 = DigestUtils.md5DigestAsHex("123456".getBytes());
        System.out.println("看看123456.getBytes()是多少：" + "123456".getBytes());
        employee.setPassword(password2);

        //2.获取当前登录用户的id，用来设置创建人create_user、update_user修改人
        long empId = (long) request.getSession().getAttribute("employee");
        //employee.setCreateUser(empId);//创建人
        //employee.setUpdateUser(empId);//修改人

        //3.自动填充不了创建和更新时间，手动设置
        // employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        log.info("新增员工信息：{}", employee);

        //3.把数据保存到数据库
        employeeService.save(employee);

        return R.success("保存成功");
    }

    //员工分页查询
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("前端传过来的数据：page = {},pageSize = {},name = {}", page, pageSize, name);

        /*//构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        QueryWrapper<Employee> wrapper = new QueryWrapper<>();
        //添加条件
        if (name != null) {
            wrapper.eq("name",name);
        }
        //执行查询
        employeeService.page(pageInfo,wrapper);*/

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }

    //根据ID查询员工信息
    /*@GetMapping("/{id}")
    public R<Employee> getById(@PathVariable long id) {
        Employee byId = employeeService.getById(id);
        if (byId != null ){
            return R.success(byId);
        }
        return R.error("没有查询到相关员工信息");
    }*/

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

    //员工编辑,传入的是json格式
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("员工编辑日记：", employee.toString());
        System.out.println("根据ID编辑员工信息");
        long id = Thread.currentThread().getId();
        log.info("线程id：{}", id);

        //获得登录用户的id
        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);

        employeeService.updateById(employee);

        return R.success("保存成功");
    }


}
